/*
 * Copyright 2022 The Backstage Authors
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
import { useCallback, useState } from 'react';

import { googleAuthApiRef, useApi } from '@backstage/core-plugin-api';

export const useSignIn = () => {
  const [isSignedIn, setSignedIn] = useState(false);
  const [isInitialized, setInitialized] = useState(false);
  const authApi = useApi(googleAuthApiRef);

  const signIn = useCallback(
    async (optional = false) => {
      const token = await authApi.getAccessToken(
        [
          'https://www.googleapis.com/auth/calendar.readonly',
          'https://www.googleapis.com/auth/userinfo.email',
        ],
        {
          optional,
          instantPopup: !optional,
        },
      );

      setSignedIn(!!token);
      setInitialized(true);
    },
    [authApi, setSignedIn],
  );

  return { isSignedIn, isInitialized, signIn };
};
